Pith Number

pith:37RF3BXS

pith:2023:37RF3BXSIULH2XR3IK5IWGVMBA

not attested not anchored not stored refs pending

Camera Calibration without Camera Access -- A Robust Validation Technique for Extended PnP Methods

Emil Brissman, Johan Edstedt, Per-Erik Forss\'en

arxiv:2302.06949 v1 · 2023-02-14 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{37RF3BXSIULH2XR3IK5IWGVMBA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T05:41:45.445094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfe25d86f245167d5e3b42ba8b1aac081c3b0b02f15b896d40b4632bd0fdf84a

Aliases

arxiv: 2302.06949 · arxiv_version: 2302.06949v1 · doi: 10.48550/arxiv.2302.06949 · pith_short_12: 37RF3BXSIULH · pith_short_16: 37RF3BXSIULH2XR3 · pith_short_8: 37RF3BXS

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/37RF3BXSIULH2XR3IK5IWGVMBA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: dfe25d86f245167d5e3b42ba8b1aac081c3b0b02f15b896d40b4632bd0fdf84a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71d83ec9321fef44124dade70f105a31f2bae851e8565ce78bd80ed8a55e2522",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2023-02-14T10:09:34Z",
    "title_canon_sha256": "2e167f6e5716643d1c8b1b6fe880bb6586dc28b8278ebda2d124863b0b63b993"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.06949",
    "kind": "arxiv",
    "version": 1
  }
}